/**
 * Created by Administrator on 2016/12/21.
 */
$('#item2 ul li').click(function () {
    console.log(123);
    $(this).css({
        'background': "url('pic/help/kuang.png') no-repeat",
        'background-size':'100% 100%'

    });
    $(this).siblings().css({
        'background': "url('pic/help/gx1.png') no-repeat",
        'background-size':'100% 100%'
    })
});